From American Idolangel Kelly Clarkson's moving showcase from Los Angeles to Britney Spears' dance breakdown blowout in Las Vegas to Mariah Carey's peerless reprisal that officially kissed 2017 goodbye — these are just a few highlights from last night's incredible event.

Scroll down to see the top New Year's Eve 2018 performances of the night and how watchers reacted on Twitter.

Mariah Carey put 2017 to rest in her comeback with "Vision of Love" and "Hero":

Kelly Clarkson rang in 2018 from LA with a dynamic delivery of "Love So Soft," "Stronger," and "Whole Lotta Woman":

Britney Spears stole the show from Las Vegas with a wildly dynamic dance display of "Toxic" and "Work B**ch":

Camila Cabello ended her breakout year with a hotly version of "Havana":

Nick Jonas put on a rocking showcase of "Home" and "Close," despite a streamer snarl: